<svg xmlns="http://www.w3.org/2000/svg" height="480" width="640" viewBox="0 0 640 480">
  <path d="M0 0h640v480H0z" fill="#21468b"/>
  <path d="M0 0h640v320H0z" fill="#fff"/>
  <path d="M0 0h640v160H0z" fill="#ae1c28"/>
</svg>
